*The following content is generated by AI and is for reference only.
<h3>Overview</h3>
<p>Pregnenolone-d4 is a <strong>deuterated internal standard</strong> used in quantitative mass spectrometry. Synthesized via catalytic deuteration of natural pregnenolone, it ensures analytical accuracy. Molecular formula: C<sub>21</sub>H<sub>36</sub>D<sub>4</sub>O; CAS No.: 1079-58-9.</p>
<h3>Application</h3>
<ul>
<li><strong>Metabolomics:</strong> Quantification of steroid hormones in plasma and urine.</li>
<li><strong>Clinical Diagnostics:</strong> Calibration for LC-MS/MS endocrine profiling assays.</li>
<li><strong>Pharmaceutical R&D:</strong> Metabolic stability studies of novel steroid therapeutics.</li>
</ul>
<h3>Precautions</h3>
<p>Store under <strong>inert atmosphere</strong> at -20°C to prevent isotopic exchange. Handle with appropriate PPE to avoid inhalation or skin contact. Not intended for direct human clinical use without formulation.</p>